diff options
| author | Rick Hudson <rlh@golang.org> | 2014-10-24 11:07:16 -0400 |
|---|---|---|
| committer | Rick Hudson <rlh@golang.org> | 2014-10-24 11:07:16 -0400 |
| commit | 2c987a9ddefd9d256bf9e7e21396e2485a7d6514 (patch) | |
| tree | 856e4b1fb53139120ce60e1724361a749c7e2afe /src/runtime/malloc.go | |
| parent | 978c971bacf92ee97b8e24ce45b485afa1c31fad (diff) | |
| download | go-2c987a9ddefd9d256bf9e7e21396e2485a7d6514.tar.gz | |
[dev.garbage] runtime: Concurrent scan code
Routines and logic to preform a concurrent stack scan of go-routines.
This CL excersizes most of the functionality needed. The
major exception being that it does not scan running goroutines.
After doing the scans it relies on a STW to finish the GC, including
rescanning the stacks. It is intended to achieve correctness,
performance will follow.
LGTM=rsc
R=golang-codereviews, rsc
CC=dvyukov, golang-codereviews
https://codereview.appspot.com/156580043
Diffstat (limited to 'src/runtime/malloc.go')
| -rw-r--r-- | src/runtime/malloc.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go index 9b4264f2b..c56e03886 100644 --- a/src/runtime/malloc.go +++ b/src/runtime/malloc.go @@ -438,7 +438,15 @@ func gogc(force int32) { mp = acquirem() mp.gcing = 1 releasem(mp) + onM(stoptheworld) + onM(finishsweep_m) // finish sweep before we start concurrent scan. + onM(starttheworld) + + // Do a concurrent heap scan before we stop the world. + onM(gcscan_m) + onM(stoptheworld) + if mp != acquirem() { gothrow("gogc: rescheduled") } |